My warning signal does not go on when i leave my headlights on... is that a fuse?

That's your fuses check the accessory fuses they're also labeled parking accessory is the fuse you need to change on that one and make sure you don't put a higher fuse than what it requires

Check fuses. Replace the turn signal switch for the head lights. If the wiper fuse is good, Replace the turn signal switch first, then go after the wiper motor. Both run threw the turn signal switch.

Check the fuse box on the right (passenger) side of the center console. You should be able to identify which fuse it is by checking in the owner's manual.

Hi. Check if the interior light and the door warning signal for the drivers door also do not work. If they don't then the most likely cause would be the drivers door lock itself. Kind regards, Neil

Check out all your fuses inside cab and under the hood

Check all fuses under neath dash and underneath hood.

Hey HotrodHarley,
I would pull out your hazzard switch and clean it real well. the signal, brake lights are connected to the hazzard switch and if it doesn't fully disengage you wont get the brake lights or the flashers to come on. It happened to me on my 89 Raider last year.

Lets Look at the fuses once more the # 2 threw 5 i have seen the fuse be good but it had loss contact in the fuse box, remove the fuse and install them to see if this helps
Also at the battery there is a fuse link check here to see if this has blown or loss contact,, a new one can be spliced in if needs replacemint

CIRCUIT INFORMATION
(What the fuse is for.) 1 25 Amp Rear washer / wiper - Located just right of top center in fuse bank. 2 15 Amp Radio, Cigarette lighter 3 25 Amp Heater blower motor - (* - if this keeps blowing or you only have heat on one speed check your blower motor resistor pack.) 4 20 Amp Turn signal, Back-up lights, Rear window defogger relay 5 10 Amp Dome light, Courtesy lights, Glove box light, Cargo light, Radio memory, Power mirrors, Teltak connector (For old analog "bag" cell phones, I think.) 6 15 Amp Hazard warning lights, Brake / Stop lights 7 10 Amp Parking lights, Headlight Warning Chime/Buzzer, Instrument panel light dimmer 8 7.5 Amp Gauges, Instrument cluster, Seat belt warning, Headlight delay, Chime module, Overhead console 9 5 Amp Instrument panel illumination 10 25 Amp Rear window defogger 11 30 Amp
Circuit Breaker Power door locks, Power seats, Trailer towing wiring harness 12 10 Amp ETR (Delco OEM) radio, Power antenna 13
(1984 - 1987) - - - Spare Fuse (GM automatics and manual transmissions.) 13
(1988) 7.5 Amp Transmission control unit (For AW4 automatic transmissions) 14 25 Amp Headlight delay, Horns, Security alarm 15 5.5 Amp
Circuit Breaker Front windshield wipers 16 30 Amp
Circuit Breaker Power Windows 17 10 Amp Clock, Security alarm (Ignition)

it's probably going to be the buzzer itself. You can either get that replaced OR there are aftermarket buzzers that attach onto your headlight fuse and when your battery voltage drops below 13 volts or so, and your lights are on--it'll ding. thats what i'd do.

This should be a bad turn signal flasher, located on the fuse block (not an actual fuse, usually a round cylinder plug in )